Joint source-channel coded multidimensional modulation for variable-length codes

Resource-constrained networks such as deep space communications and mobile communications have the phenomena such us large-scale path loss,small-scale fading,and multipath effect,which are very hostile for information transmission.Combining Shannon’s source-channel coding theory with multidimensiona...

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Veröffentlicht in:Science China. Information sciences Jg. 57; H. 6; S. 15 - 26
Hauptverfasser: Cheng, Chen, Tu, GuoFang, Zhang, Can
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Heidelberg Science China Press 01.06.2014
Springer Nature B.V
Schlagworte:
Computer Science
Constellations
Decoding
Deep space
Euclidean geometry
Fading
Information Systems and Communication Service
Modulation
Networks
Noise levels
Phase shift keying
Research Paper
Signal to noise ratio
Symbols
变长码
多维
小尺度衰落
欧几里德距离
联合信源信道编码
解码方法
调制
资源受限
variable-length codes
multidimensional modulation
constellation mapping
setpartitioning
joint source-channel en/decoding
ISSN:1674-733X, 1869-1919
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Zusammenfassung:Resource-constrained networks such as deep space communications and mobile communications have the phenomena such us large-scale path loss,small-scale fading,and multipath effect,which are very hostile for information transmission.Combining Shannon’s source-channel coding theory with multidimensional modulation,an en/decoding method is proposed in this article called variable-length symbol-level joint sourcechannel and multidimensional modulation.Utilizing symbol-level source a priori information,an optimized symbol-level L-dimensional M-ary phase shift keying（LD-MPSK）constellation mapping function has been derived,which can increase free Euclidean distance between modulated symbols and enhance the decoding performance.It has been shown in the simulation results that the proposed scheme can achieve more than 2 dB signal-to-noise ratio gains compared with the conventional bit-level schemes under the condition of the same error rate.
Bibliographie:11-5847/TP
Resource-constrained networks such as deep space communications and mobile communications have the phenomena such us large-scale path loss,small-scale fading,and multipath effect,which are very hostile for information transmission.Combining Shannon’s source-channel coding theory with multidimensional modulation,an en/decoding method is proposed in this article called variable-length symbol-level joint sourcechannel and multidimensional modulation.Utilizing symbol-level source a priori information,an optimized symbol-level L-dimensional M-ary phase shift keying（LD-MPSK）constellation mapping function has been derived,which can increase free Euclidean distance between modulated symbols and enhance the decoding performance.It has been shown in the simulation results that the proposed scheme can achieve more than 2 dB signal-to-noise ratio gains compared with the conventional bit-level schemes under the condition of the same error rate.
joint source-channel en/decoding,variable-length codes,multidimensional modulation,setpartitioning,constellation mapping
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ISSN:1674-733X
1869-1919
DOI:10.1007/s11432-014-5079-7